Besides the irritation it is causing some people, I have to state the obvious about buying Silk Road accounts:

how can you verify that the account is valid before you get it?

I am perfectly willing to pay bitcoin for a valid account, but I cannot see how to keep from being ripped off.

Not only that, but there will probably be a dozen similiar sites 2 months from now.

Of course, some of them will be LE sting operations.  

How can you prove that the account works ahead of time?

I think there will be a lot of scammers selling fake accounts, I'm not saying YOU are, but it just seems impossible to verify.

Just wait a few months, there will be a dozen Silk Roads.

What makes it unique right now is the escrow system. Once a few organized crime hackers get to work, it won't be unique any more.